C++ sk_sp::reset方法代码示例

/*
 *  Modulo internal errors, this should always succeed *if* the matrix is downscaling
 *  (in this case, we have the inverse, so it succeeds if fInvMatrix is upscaling)
 */
bool SkDefaultBitmapControllerState::processMediumRequest(const SkBitmapProvider& provider) {
    SkASSERT(fQuality <= kMedium_SkFilterQuality);
    if (fQuality != kMedium_SkFilterQuality) {
        return false;
    }

    // Our default return state is to downgrade the request to Low, w/ or w/o setting fBitmap
    // to a valid bitmap.
    fQuality = kLow_SkFilterQuality;

    SkSize invScaleSize;
    if (!fInvMatrix.decomposeScale(&invScaleSize, nullptr)) {
        return false;
    }

    SkDestinationSurfaceColorMode colorMode = provider.dstColorSpace()
        ? SkDestinationSurfaceColorMode::kGammaAndColorSpaceAware
        : SkDestinationSurfaceColorMode::kLegacy;
    if (invScaleSize.width() > SK_Scalar1 || invScaleSize.height() > SK_Scalar1) {
        fCurrMip.reset(SkMipMapCache::FindAndRef(provider.makeCacheDesc(), colorMode));
        if (nullptr == fCurrMip.get()) {
            SkBitmap orig;
            if (!provider.asBitmap(&orig)) {
                return false;
            }
            fCurrMip.reset(SkMipMapCache::AddAndRef(orig, colorMode));
            if (nullptr == fCurrMip.get()) {
                return false;
            }
        }
        // diagnostic for a crasher...
        SkASSERT_RELEASE(fCurrMip->data());

        const SkSize scale = SkSize::Make(SkScalarInvert(invScaleSize.width()),
                                          SkScalarInvert(invScaleSize.height()));
        SkMipMap::Level level;
        if (fCurrMip->extractLevel(scale, &level)) {
            const SkSize& invScaleFixup = level.fScale;
            fInvMatrix.postScale(invScaleFixup.width(), invScaleFixup.height());

            // todo: if we could wrap the fCurrMip in a pixelref, then we could just install
            //       that here, and not need to explicitly track it ourselves.
            return fResultBitmap.installPixels(level.fPixmap);
        } else {
            // failed to extract, so release the mipmap
            fCurrMip.reset(nullptr);
        }
    }
    return false;
}

static sk_sp<SkColorTable> sanitize(const SkImageInfo& info, sk_sp<SkColorTable> ctable) {
    if (kIndex_8_SkColorType == info.colorType()) {
        SkASSERT(ctable);
    } else {
        ctable.reset(nullptr);
    }
    return ctable;
}

    void findDefaultStyleSet() {
        SkASSERT(!fStyleSets.empty());

        static const char* defaultNames[] = { "sans-serif" };
        for (const char* defaultName : defaultNames) {
            fDefaultStyleSet.reset(this->onMatchFamily(defaultName));
            if (fDefaultStyleSet) {
                break;
            }
        }
        if (nullptr == fDefaultStyleSet) {
            fDefaultStyleSet = fStyleSets[0];
        }
        SkASSERT(fDefaultStyleSet);
    }

 void onPerCanvasPostDraw(SkCanvas*) override {
     fSurface.reset(nullptr);
 }

// This tests the basic capabilities of the uniquely keyed texture proxies. Does assigning
// and looking them up work, etc.
static void basic_test(GrContext* context,
                       skiatest::Reporter* reporter,
                       sk_sp<GrTextureProxy> proxy) {
    static int id = 1;

    GrResourceProvider* resourceProvider = context->priv().resourceProvider();
    GrProxyProvider* proxyProvider = context->priv().proxyProvider();
    GrResourceCache* cache = context->priv().getResourceCache();

    int startCacheCount = cache->getResourceCount();

    GrUniqueKey key;
    if (proxy->getUniqueKey().isValid()) {
        key = proxy->getUniqueKey();
    } else {
        GrMakeKeyFromImageID(&key, id, SkIRect::MakeWH(64, 64));
        ++id;

        // Assigning the uniqueKey adds the proxy to the hash but doesn't force instantiation
        REPORTER_ASSERT(reporter, !proxyProvider->numUniqueKeyProxies_TestOnly());
        SkAssertResult(proxyProvider->assignUniqueKeyToProxy(key, proxy.get()));
    }

    REPORTER_ASSERT(reporter, 1 == proxyProvider->numUniqueKeyProxies_TestOnly());
    REPORTER_ASSERT(reporter, startCacheCount == cache->getResourceCount());

    // setUniqueKey had better stick
    REPORTER_ASSERT(reporter, key == proxy->getUniqueKey());

    // We just added it, surely we can find it
    REPORTER_ASSERT(reporter, proxyProvider->findOrCreateProxyByUniqueKey(
                                                                key, kBottomLeft_GrSurfaceOrigin));
    REPORTER_ASSERT(reporter, 1 == proxyProvider->numUniqueKeyProxies_TestOnly());

    int expectedCacheCount = startCacheCount + (proxy->isInstantiated() ? 0 : 1);

    // Once instantiated, the backing resource should have the same key
    SkAssertResult(proxy->instantiate(resourceProvider));
    const GrUniqueKey texKey = proxy->peekSurface()->getUniqueKey();
    REPORTER_ASSERT(reporter, texKey.isValid());
    REPORTER_ASSERT(reporter, key == texKey);

    // An Unbudgeted-cacheable resource will not get purged when a proxy with the same key is
    // deleted.
    bool expectResourceToOutliveProxy = proxy->peekSurface()->resourcePriv().budgetedType() ==
                                        GrBudgetedType::kUnbudgetedCacheable;

    // An Unbudgeted-uncacheable resource is never kept alive if it's ref cnt reaches zero even if
    // it has a key.
    bool expectDeletingProxyToDeleteResource =
            proxy->peekSurface()->resourcePriv().budgetedType() ==
            GrBudgetedType::kUnbudgetedUncacheable;

    // deleting the proxy should delete it from the hash but not the cache
    proxy = nullptr;
    if (expectDeletingProxyToDeleteResource) {
        expectedCacheCount -= 1;
    }
    REPORTER_ASSERT(reporter, 0 == proxyProvider->numUniqueKeyProxies_TestOnly());
    REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());

    // If the proxy was cached refinding it should bring it back to life
    proxy = proxyProvider->findOrCreateProxyByUniqueKey(key, kBottomLeft_GrSurfaceOrigin);
    REPORTER_ASSERT(reporter, proxy);
    REPORTER_ASSERT(reporter, 1 == proxyProvider->numUniqueKeyProxies_TestOnly());
    REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());

    // Mega-purging it should remove it from both the hash and the cache
    proxy = nullptr;
    cache->purgeAllUnlocked();
    if (!expectResourceToOutliveProxy) {
        expectedCacheCount--;
    }
    REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());

    // If the texture was deleted then the proxy should no longer be findable. Otherwise, it should
    // be.
    proxy = proxyProvider->findOrCreateProxyByUniqueKey(key, kBottomLeft_GrSurfaceOrigin);
    REPORTER_ASSERT(reporter, expectResourceToOutliveProxy ? (bool)proxy : !proxy);
    REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());

    if (expectResourceToOutliveProxy) {
        proxy.reset();
        GrUniqueKeyInvalidatedMessage msg(texKey, context->priv().contextID());
        SkMessageBus<GrUniqueKeyInvalidatedMessage>::Post(msg);
        cache->purgeAsNeeded();
        expectedCacheCount--;
        proxy = proxyProvider->findOrCreateProxyByUniqueKey(key, kBottomLeft_GrSurfaceOrigin);
        REPORTER_ASSERT(reporter, !proxy);
        REPORTER_ASSERT(reporter, expectedCacheCount == cache->getResourceCount());
    }
}